Commit Graph

6 Commits

Author SHA1 Message Date
Olivier Houchard
ed0b604f1f Add an option to be able to override the value of the AT91 master clock
frequency. It'd be better to be able to calculate it at runtime, but we need
the information very early, to setup the uart.
2007-10-25 23:02:42 +00:00
Warner Losh
3f0fd37320 Make USB work on the KB9202{,A,B} boards. This has been in p4 for about
7 months.  You must have JP6 in the 1-2 position to supply power to the
USB devices, but I've used uftdi, uplcom and umass successfully.  If you
have it in 2-3, then nothing will show up.  Also, if you have the FQPA
packaging for the AT91RM9200 (like the KN9202 boards have), you will get
the following message

uhub0: device problem (IOERROR), disabling port 2

due to a hardware erratum.  It is safe to ignore as it is about pins that
aren't brought out on the FQPA package and aren't proeprly terminated either.
Alas, there's no register to read to tell the FQPA from the BGA versions.

Submitted by: Daan Vreeken
Approved by: re (kensmith)
2007-07-31 17:43:18 +00:00
Olivier Houchard
f35ea630e9 Relocate the vector page for AT91, to work around bugs with the LOW_VECTOR
code.
2006-08-28 20:05:00 +00:00
Warner Losh
57dc2664ef Probe the memory size of the board better. Look at the bus width,
number of banks, rows and columns the SDRAMC is programmed to access
to determine the RAM size for the board, rather than hard-wiring it to
be 32MB.  My company's board with 64MB now probes correctly, as does
the KB9202 with only 32MB.  This means that to detect the right memory
size, our boot loader must correctly initialize these values.  This is
a fairly safe assumption because the boot loader has to initialize
SDRAM already, and it isn't really possible to change this register
after we've accessed SDRAM.
2006-06-20 20:13:40 +00:00
Warner Losh
f54a134552 MFP4:
GC and fix definitions.

# some of this may have been done by cognet
2006-03-18 01:38:25 +00:00
Warner Losh
1248f2322b Import support for the Atmel AT91RM9200 CPU/Microcontroller. This SoC
is a ARM920T based CPU with a bunch of built-in peripherals.  The
inital import supports the SPI bus, the TWI bus (although iicbus
integration is not complete), the uarts, the system timer and the
onboard ethernet.  Support for the Kwikbyte KB9202
(http://www.kwikbyte.com) board is also included, although there's no
reason why the 9200 and the 9201 wouldn't also work.  Primitive
support for running under the skyeye emulator is also provided
(although skyeye's support for the AT91RM9200 is a little weak).

The code has been structured so that other members of Atmel's arm family can
be supported in the future.  The AT91SAM9260 is not presently supported
due to lack of hardware.  The arm7tdmi families are also not supported
becasue they lack an MMU.

Many thanks to cognet@ for his help and assistance in bringing up this
board.  He did much of the vm work and wrote parts of the uart and
system timer code as well as the bus space implementation.

The system boots to single user w/o problem, although the serial
console is a little slow and the ethernet driver is still in flux.

This work was sponsored by Timing Solutions, Corporation.  I am
grateful to their support of the FreeBSD project in this manner.
2006-02-04 23:32:13 +00:00